Quantum Hall Resistance System

6020Q Quantum Hall Ratio Resistance Bridge

Self-Calibration Quantum Hall Ratio/Resistance Bridge

• NEW:
  • current algorithm following CCC methodology
  • zero-filter option
  • microcontroller
  • capacitive touchscreen and user interface
• LEMO connectors for resistor connections
• Quantum Hall applications, including gallium arsenide and graphene sample measurements
• V_cr, V_xx, and V_xy measurements
• Self-calibration of 27-bit binary wound current comparator and a nanovolt detector
• Detector reading
• Range: 0.1 Ω to 13 kΩ
• Best Accuracy: < 0.015 µΩ/Ω
• Maximum ratio: 14:1
• Resistance range: 0.1 Ω to 13 kΩ
• Capacitive 7″ touch screen
• IEEE-488.2 standard

6820T Compact Dry QHR System

• Cryogen-free System
• Best accuracy to 0.003 × 10^-6 with CCC Model 6200A
• Best accuracy to 0.015 × 10^-6 with DCC Model 6020Q
• NEW low-vibration design < 10 nm
• 5 Tesla standard system magnet
• New secure stand
• Operational temperature < 4 K
• 3 sample mounts (LC44 or TO8)
• Easy-to-use, turnkey functionality
• For use with CCC and DCC bridges
• 6- to 7-hour cooldown rate
• Direct transfer to 100 Ω, 1 kΩ, 10 kΩ, and 100 kΩ standards
• 6020Q system range: 0.1 Ω to 1 MΩ with 6200A or 100 kΩ
• Optional multiple value arrays of RK/2, 100 Ω, 1 kΩ, 10 kΩ and 100 kΩ
• Simultaneously compare Hall bar and arrays when using 6200
• Current Range when using 6200A
  • Three high-current ranges +/- (50 mA, 100 mA and 150 mA)
  • Five low-current ranges +/- (100 μA, 333 μA, 1 mA, 3.3 mA, and 10 mA)

6800C QHR Standard

• System accuracy to < 0.015 × 10^-6 with 6020Q 
• System accuracy to < 0.003 × 10^-6 with 6200A
• Built-in Rxx (uV) measurements in ADCC bridge
• 9 Tesla standard system magnet
• Up to 14 Tesla available
• No liquid helium required
• Stable, controlled sample environment
• Temperature range: 1.3 K to 300 K
• Low operating costs
• System range: 0.1 Ω to 10 kΩ (with 6020Q)
• Graphene-compatible
• Features AccuBridge^® technology
• Dual sample probe